1. Higher School of Rural Development, Universidade Eduardo Mondlane, Mozambique
2. Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, USA
3. dBioISI, Faculty of Sciences, University of Lisbon, Portugal
4. Soybean and Nitrogen Fixation Research, ARS-USDA, North Carolina State University, Raleigh, North Carolina, USA